Finding the Fourth Proportional to 1,424.81, 1,966.25 and 901.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.81 : 1,966.25 = 901.55 : x
2. Step 2: Convert to fraction form
   1,424.81/1,966.25 = 901.55/x
3. Step 3: Cross multiply
   1,424.81x = 1,966.25 × 901.55
4. Step 4: Simplify right side
   1,424.81x = 1,772,679.86
5. Step 5: Solve for x
   x = 1,772,679.86/1,424.81
6. Step 6: Final answer
   x = 1,244.15